shooting 168 amax's
MODEL 11 SAVAGE 300WSM

loaded new brass
case neck .336
shoulder .531
base .549
length 2.093

new case fired first time
case neck .344 went +.008
shoulder .539 went +.008
base .554 went +.005
length 2.100 went +.007
primer is fine no signs of high pressure

RESIZED CASE HORNADY DIE
NECK .334 WENT - .010
SHOULDER .5315 WENT -.0075
BASE .551 WENT -.003
LENGTH 2.106 WENT +.006

RESIZED CASE RCBS DIE
NECK .335
SHOULDER .532
BASE .552
LENGTH 2.103

I think I need to get a custom die made or just neck size them
both of these dies are working the brass to much.
Have any of you had this problem with your 300wsm.